Founding Engineer, Python, FastAPI, Next.js

Sierra

. Own the codebase and architecture end to end, beginning with an audit of v1 and a plan to keep, rebuild, and harden it .

Posted 11/6/2026full-timeUnited StatesMid-LevelSenior💰 $160,000 - $250,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack development with a strong focus on Python, FastAPI, and PostgreSQL, while effectively managing product decisions and engineering standards. Proven ability to integrate external systems and build real-time features, alongside a commitment to clean deployments and monitoring.

Highest-signal resume keywords

Full-Stack DevelopmentPython FluencyPostgreSQL ExpertiseExperience with FastAPIReal-Time Feature Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

PythonTypeScriptFastAPIPostgreSQLSQLAlchemyNext.jsWebSocketsAlembic MigrationsIntegration with ERP SystemsTesting and Monitoring

Soft Skills

Clear WritingIndependent Decision-MakingDetail-OrientedCollaborative CommunicationWillingness to Challenge Ideas

Tools & Technologies

ERP SystemsNetSuiteSAP Business OneAcumaticaQuickBooksAI Tools

Industry Keywords

Consumer Goods ManufacturingB2B OperationsSupply Chain SoftwareProduction Software

Tech Stack

Tools & technologies

ERPJavaScriptNext.jsPostgresPythonReactTypeScript

About the role

Key responsibilities & impact

Own the codebase and architecture end to end, beginning with an audit of v1 and a plan to keep, rebuild, and harden it
Ship full-stack features across Python, FastAPI, SQLAlchemy, PostgreSQL, WebSockets, and Next.js
Build integrations with manufacturers' ERP systems and third-party tools for order, inventory, and production data
Design and evolve the data model with clean, reversible Alembic migrations
Build the real-time layer for shared status, documents, and messages
Own infrastructure, deployment, and monitoring
Join design partner calls and translate user feedback into product decisions
Help shape AI capabilities in the product
Set engineering standards and help hire future engineers
Turn a working v1 into production-grade software for consumer goods manufacturers

Requirements

What you’ll need

5+ years building production software, with ownership of systems across front end and back end
Experience shipping a product from 0 to 1, ideally as an early engineer at a startup
Fluency in Python and TypeScript
Experience with FastAPI or similar and React or Next.js
Strong PostgreSQL knowledge, including schema design, query tuning, and migrations
Experience integrating external systems, including retries, idempotency, and sync conflicts
Ability to make product and prioritization decisions independently
Willingness to challenge ideas and propose better options
Experience with tests, monitoring, and clean deployments
Daily use of AI tools
Clear writing and ability to work closely with a hands-on, detail-oriented founder
Advanced to Fluent English skills
U.S.-based
Preferred: experience with ERP systems such as NetSuite, SAP Business One, Acumatica, or QuickBooks, or supply chain, manufacturing, or B2B operations software
Preferred: experience building real-time features with WebSockets
Preferred: experience shipping AI or LLM-powered features
Preferred: side projects demonstrating range and initiative

Benefits

Comp & perks

Equity grant
Regular in-person work sessions with the founder in the early months
Occasional travel to manufacturing sites